Answer / krithiga hari

DD statement contains the information about the data that
will be read or written within the job. The DD statement
must immediately follow the Exec statement. It should exist
for all the datasets.

Following are the parameters of DD statement.

ddname, DSN - Dta Set Name, DISP - Disposition (sattus,
normal disposition, ubnormal disposition)

Example:

//JOB1 JOB A123, 'KRITHIGA'
//STEP1 EXEC PGM=PGM1
//DDNAME DD DSN=DATA.ORG.JCL.TEST,
DISP=(NEW,CATLG,DELETE)

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